Topic Development

357 questions

Question 341Question

A writer is editing a passage about the preservation of the Tudor warship Mary Rose.

In 1982, the hull of the Tudor warship Mary Rose was raised from the Solent seabed, where it had rested since sinking in 1545. Once retrieved, the waterlogged timbers faced the immediate threat of rapid drying and decay. To prevent this, conservators sprayed the hull continuously with cold freshwater, followed by a mist of polyethylene glycol (PEG), a water-soluble wax that gradually replaced the water in the wood cells. [1] This painstaking process took decades, concluding only in 2013 when the ship was finally allowed to dry under controlled conditions. Today, the ship is housed in a museum in Portsmouth, attracting thousands of visitors annually.

The writer is considering adding the following sentence to the paragraph at Point [1]:

"Polyethylene glycol is also commonly used as an additive in cosmetics, toothpastes, and various pharmaceutical products."

Should the writer make this addition?

Show answer & explanation

Answer: No, because it interrupts the paragraph's description of the ship's conservation process with details that are irrelevant to the topic.

Answer

The correct option is the one stating that the addition should not be made because it interrupts the paragraph's description of the ship's conservation process with details that are irrelevant to the topic.
The correct option is the one stating that the addition should not be made because it interrupts the paragraph's description of the ship's conservation process with details that are irrelevant to the topic. The paragraph focus is strictly on the history, recovery, and conservation of the Mary Rose. Introducing everyday applications of polyethylene glycol deviates from this focus, making the sentence irrelevant.

Step-by-Step Solution

1
Analyze the main focus of the paragraph.
The paragraph describes the retrieval and conservation process of the Tudor warship Mary Rose, specifically detailing how conservators prevented the waterlogged wood from decaying using water and polyethylene glycol (PEG).
To evaluate whether the proposed sentence is relevant, we must first establish the specific topic of the paragraph.
2
Analyze the proposed sentence to see if it supports or expands upon this main focus.
The proposed sentence discusses other common uses of polyethylene glycol (PEG) in cosmetics, toothpaste, and pharmaceuticals.
Determining the function of the new sentence helps identify if it adds valuable information or creates a digression.
3
Compare the purpose of the sentence with the paragraph focus to determine if it should be added.
The proposed sentence introduces details about everyday consumer products that are completely unrelated to ship conservation, meaning it disrupts the logical flow and should not be added.
Rhetorical relevance requires every sentence in a paragraph to support the paragraph's central point.

Key Concept

Evaluating the relevance of adding information to a paragraph based on its main focus and unity.
Question 342Question

A writer is editing a passage about the history of the neon sign and has drafted the following paragraph:

In 1910, French engineer Georges Claude introduced the first neon lamp to the public at the Paris Motor Show. Claude had discovered that passing an electrical current through sealed glass tubes containing neon gas produced a bright, glowing red light. [1] Seeking to commercialize his invention, Claude founded a company called Claude Neon to sell these vibrant tubes for advertising. By the 1920s, neon signs had crossed the Atlantic, transforming the nightscapes of American cities like Los Angeles and New York with their electric glow.

At Point [1], the writer is considering adding the following sentence:
"Neon is a noble gas, which means it is colorless, odorless, and highly unreactive under normal conditions."

Should the writer make this addition?

Show answer & explanation

Answer: No, because it interrupts the paragraph's focus on the development and commercialization of the neon lamp with irrelevant chemical details.

Answer

No, because it interrupts the paragraph's focus on the development and commercialization of the neon lamp with irrelevant chemical details.
The correct option correctly identifies that the proposed sentence should not be added because it introduces irrelevant chemical facts about neon gas that disrupt the paragraph's narrative focus on the commercial history and development of the neon lamp.

Step-by-Step Solution

1
Analyze the main focus of the paragraph.
The paragraph focuses on the historical introduction of the neon lamp by Georges Claude and its commercial expansion.
Understanding the paragraph's core topic helps determine whether new details are relevant.
2
Evaluate the relevance of the proposed sentence.
The proposed sentence discusses the general chemical properties of neon as a noble gas.
Determining if the proposed sentence supports the established focus or deviates from it.
3
Decide whether to add the sentence and select the correct justification.
The sentence should not be added because chemical properties of the gas are irrelevant to the historical and commercial narrative of the neon sign.
Eliminating options that suggest adding the sentence or offer incorrect reasons for deleting it.

Key Concept

Evaluating Relevance for Adding or Deleting Content
Estimated Time:1m 0s
Question 343Question

Passage Excerpt:
In 2009, chemist Mas Subramanian and his team at Oregon State University were researching materials for electronics applications. While heating manganese oxide along with other chemicals to high temperatures, they accidentally created a brilliant, durable new pigment: YInMn Blue. Chemists had long sought a blue pigment that was both stable and non-toxic, [X]

The writer wants to emphasize the safety benefits of YInMn Blue by contrasting it with the specific chemical hazards of traditional blue pigments. Given that all the choices are true, which one best accomplishes this goal?

Show answer & explanation

Answer: since traditional options like cobalt blue and Prussian blue contained toxic elements such as cobalt and cyanide.

Answer

since traditional options like cobalt blue and Prussian blue contained toxic elements such as cobalt and cyanide.
The correct option, which states that traditional options contained toxic elements such as cobalt and cyanide, is grammatically correct and directly fulfills the writer's goal of highlighting safety benefits by contrasting YInMn Blue with the specific health hazards of older pigments.

Step-by-Step Solution

1
Identify the rhetorical goal specified in the prompt.
The goal is to highlight the safety benefits of the new pigment by referencing the specific chemical hazards of traditional blue pigments.
Recognizing the exact criteria prevents choosing options that are grammatically correct but rhetorically off-topic.
2
Check the options for grammatical correctness.
The option containing 'will contain' creates an illogical shift to future tense, and the option lacking a subordinating conjunction creates a comma splice.
Eliminating grammatically flawed options helps narrow down the choices.
3
Evaluate the remaining grammatically correct options against the rhetorical goal.
The option mentioning high costs does not address safety, whereas the option detailing toxic elements like cobalt and cyanide directly emphasizes the chemical hazards of traditional pigments.
The option that satisfies both grammatical and rhetorical requirements is the correct choice.

Key Concept

Meeting Specific Rhetorical Goals
Estimated Time:1m 0s
Question 344Question

A writer is editing an essay about early bridge engineering and has drafted the following paragraph:

James Finley, a judge in Pennsylvania, revolutionized transportation in 18011801 by building the first modern suspension bridge. Finley utilized iron chains to support a level wooden deck, allowing heavy carriages to cross Jacob's Creek safely. Prior to Finley's design, suspension bridges were constructed from rope or vines, which dipped significantly in the center and were highly unstable in strong winds. Finley patented his design in 18081808, and he went on to write several influential pamphlets describing the structural engineering principles behind his bridge.

Should the writer keep or delete the underlined sentence?

Show answer & explanation

Answer: Keep it, because it establishes the historical context that highlights the significance of Finley's structural innovation.

Answer

Keep it, because it establishes the historical context that highlights the significance of Finley's structural innovation.
The correct option states that the sentence should be kept because it establishes the historical context that highlights the significance of Finley's structural innovation. The paragraph focuses on Finley's revolutionary bridge design, and contrasting it with the instability of prior designs helps the reader appreciate the importance of his invention.

Step-by-Step Solution

1
Identify the main focus of the paragraph.
The paragraph describes James Finley's development of the modern suspension bridge, focusing on its design innovations.
Understanding the paragraph's theme is necessary to evaluate the relevance of the sentence in question.
2
Analyze the function of the underlined sentence within the paragraph.
The sentence explains that prior bridges made of rope or vines were unstable and dipped, which contrasts with Finley's level and safe design.
This determines if the sentence contributes to the focus of the paragraph or introduces an irrelevant digression.
3
Evaluate the decision and choose the correct justification.
The sentence should be kept to provide historical context. The option containing 'Keep it' and mentioning 'historical context' is selected.
Only one option correctly identifies both the correct decision (keep) and the logical rhetorical purpose.

Key Concept

Evaluating the relevance of supporting details by assessing whether they contribute to the main topic of a paragraph or create an irrelevant shift in focus.
Question 345Question

Passage Excerpt:
In 1885, Wilson Bentley, a farmer from Vermont, became the first person to photograph a single snowflake. Bentley accomplished this by attaching a microscope to his bellows camera. [X] Over his lifetime, he captured more than five thousand images of snowflakes, proving that no two are identical.

At this point in the passage, the writer wants to add a sentence that emphasizes the painstaking care and physical discomfort Bentley endured to capture his images. Which choice best accomplishes this goal?

Show answer & explanation

Answer: He stood for hours in unheated woodsheds during Vermont's freezing winters, carefully transferring each fragile crystal with a feather so it would not melt.

Answer

He stood for hours in unheated woodsheds during Vermont's freezing winters, carefully transferring each fragile crystal with a feather so it would not melt.
The correct option directly addresses both aspects of the writer's goal. It highlights physical discomfort by describing Bentley standing for hours in unheated woodsheds during freezing winters, and it illustrates painstaking care by noting how he carefully transferred each fragile crystal using a feather to prevent melting.

Step-by-Step Solution

1
Analyze the prompt to identify the specific rhetorical goals requested.
The goal is to find a sentence that emphasizes two specific elements: the painstaking care Bentley took and the physical discomfort he endured.
Understanding the precise criteria of the rhetorical goal is necessary to evaluate the options.
2
Evaluate each choice against the identified criteria to see which one contains details of both care and physical discomfort.
The statement describing standing in unheated woodsheds in freezing winters (discomfort) and transferring crystals with a feather (care) is the only option that fulfills both criteria.
Analyzing each option's semantic content ensures that the selected answer meets the specific prompt requirements.
3
Check the grammatically correct options that fail the goal and eliminate any choices containing grammatical errors.
The options about journal publications and natural calling are grammatically correct but miss the rhetorical goal. The choice about neighbors mocking him is a comma splice, making it both grammatically incorrect and rhetorically off-target.
Eliminating distractors based on both content mismatches and grammatical errors confirms the correct choice.

Key Concept

Meeting Specific Rhetorical Goals
Question 346Question

A writer is editing a passage about the history of industrial chemistry and has drafted the following paragraph:

In 1856, eighteen-year-old chemist William Henry Perkin was attempting to synthesize quinine, a treatment for malaria, in his home laboratory. Instead of obtaining a clear drug, he produced a dark, sticky sludge. Cleaning his flask with alcohol, Perkin noticed that the mixture turned a vibrant, deep purple. [1] Perkin had accidentally created mauveine, the world’s first synthetic aniline dye. This new substance revolutionized the textile industry and birthed the modern chemical industry.

The writer is considering adding the following sentence at Point [1]:

"At the time, purple dye was traditionally extracted from sea snails, making it so expensive that only royalty could afford it."

Should the writer make this addition?

Show answer & explanation

Answer: Yes, because it provides historical context that helps explain the revolutionary impact of Perkin's synthetic dye.

Answer

Yes, because it provides historical context that helps explain the revolutionary impact of Perkin's synthetic dye.
The correct option is correct because the proposed sentence explains why a synthetic purple dye was so groundbreaking. By explaining that natural purple dye was rare and extremely expensive, the addition provides the necessary context for the reader to understand why Perkin's discovery revolutionized the textile and chemical industries.

Step-by-Step Solution

1
Analyze the main focus and flow of the paragraph.
The paragraph describes William Henry Perkin's accidental discovery of the purple dye mauveine and notes that this discovery revolutionized the textile industry.
Understanding the paragraph's purpose helps determine if the new sentence supports or distracts from this purpose.
2
Evaluate the relevance of the proposed sentence.
The proposed sentence explains that natural purple dye was traditionally extremely expensive and reserved for royalty.
This establishes why a cheap, synthetic alternative (mauveine) would be highly significant and commercially revolutionary, directly connecting to the paragraph's conclusion.
3
Determine the correct decision and justification.
The sentence should be added (Yes) because it provides context that highlights the importance of the discovery, matching the option that states it provides historical context to explain the revolutionary impact.
Comparing the reasoning to the choices confirms the correct option.

Key Concept

Evaluating Relevance for Adding or Deleting Content
Estimated Time:1m 15s
Question 347Question

Passage Excerpt:

In the early nineteenth century, a Cherokee silversmith named Sequoyah became convinced that written language was the key to his people's independence. Over the course of a decade, he painstakingly designed a system of eighty-five characters representing the syllables of the spoken Cherokee language. His invention allowed Cherokee speakers to achieve literacy rapidly, leading to the establishment of the first Native American newspaper, *The Cherokee Phoenix*, in 1828.

Given that all the choices are grammatically correct, which choice most clearly and vividly emphasizes the widespread and immediate adoption of Sequoyah's system by the Cherokee community?

Show answer & explanation

Answer: Within months, thousands of Cherokee people learned to read and write the new script

Answer

The option stating that within months, thousands of Cherokee people learned to read and write the new script is the correct choice.
The correct option provides specific, vivid details that show both immediate ('Within months') and widespread ('thousands of Cherokee people') adoption of the script, fulfilling the rhetorical goal outlined in the prompt.

Step-by-Step Solution

1
Analyze the prompt to identify the specific rhetorical constraints required.
The prompt requires details showing both 'widespread' (large scale) and 'immediate' (fast or sudden) adoption of the writing system.
This establishes the criteria against which all options must be measured.
2
Evaluate the choices to check which ones fulfill both parts of the rhetorical goal.
The option highlighting 'Within months' (immediate) and 'thousands of Cherokee people' (widespread) satisfies both criteria. The other options either discuss long-term uses, detail the creator's struggles, or contain grammatical errors.
This narrows down the candidates to the rhetorically appropriate choice.
3
Check the remaining candidate for grammatical accuracy.
The correct option is grammatically sound, whereas the option containing 'they taught their neighbors' is a comma splice.
ACT English questions require the correct choice to be both rhetorically and grammatically correct.

Key Concept

Meeting Specific Rhetorical Goals
Estimated Time:1m 0s
Question 348Question

Passage Excerpt:

In the summer of 1967, postgraduate student Jocelyn Bell Burnell [1] from a new radio telescope she had helped build. Among the miles of data, she noticed a strange "scruff"—a series of repeating radio pulses that occurred every 1.33 seconds. Although some of her colleagues initially wondered if the signals came from an extraterrestrial civilization, Bell Burnell and her advisor soon realized they had discovered a rapidly spinning neutron star, later named a pulsar.

Which choice most effectively emphasizes the tedious, labor-intensive nature of Bell Burnell's work in analyzing the telescope's output?

Show answer & explanation

Answer: manually scanned miles of paper printouts

Answer

manually scanned miles of paper printouts
The correct option, which mentions manually scanning miles of paper printouts, is the only choice that emphasizes both the hands-on labor ('manually') and the tedious, repetitive volume of the task ('miles of paper printouts') while remaining grammatically correct.

Step-by-Step Solution

1
Analyze the prompt's rhetorical goal.
The goal is to emphasize the tedious and labor-intensive nature of Bell Burnell's data analysis.
Identifying the target criteria allows for systematic evaluation of each option.
2
Evaluate the choices for grammatical correctness and alignment with the prompt's criteria.
Scanning miles of paper printouts manually implies a high volume of work and physical effort, directly matching the prompt's focus. General descriptions of reviewing records or results do not capture this intensity, and placing a comma before a restrictive clause is grammatically incorrect.
Eliminating grammatically incorrect choices and options that do not meet the rhetorical goal leads to the correct answer.

Key Concept

Meeting Specific Rhetorical Goals
Estimated Time:1m 0s
Question 349Question

A writer is editing a passage about the history of American baking. Read the following paragraph:

In 1938, Ruth Wakefield, co-owner of the Toll House Inn in Massachusetts, made a culinary breakthrough that would redefine American desserts. While preparing a batch of chocolate cookies, she ran out of baker's chocolate and instead chopped up a block of semi-sweet chocolate, expecting it to melt and disperse throughout the dough. [1] Instead, the chocolate pieces held their shape, creating the very first chocolate chip cookies. The recipe, which she called the 'Toll House Chocolate Crunch Cookie,' quickly became a national sensation.

The writer is considering adding the following sentence at point [1]:

'The Toll House Inn, originally built as a toll booth in 1709, had been a popular spot for travelers to change horses and rest.'

Should the writer make this addition?

Show answer & explanation

Answer: No, because it interrupts the sequence of events detailing the accidental creation of the cookie with irrelevant details about the inn's history.

Answer

No, because it interrupts the sequence of events detailing the accidental creation of the cookie with irrelevant details about the inn's history.
The correct option is the one stating that the sentence should not be added because it interrupts the sequence of events detailing the accidental creation of the cookie with irrelevant details about the inn's history. The paragraph's sole focus is the process and result of Wakefield's baking experiment in 1938. The history of the building itself from 1709 is tangential and disrupts the chronological narrative.

Step-by-Step Solution

1
Analyze the main focus of the paragraph.
The paragraph describes the narrative sequence of how Ruth Wakefield accidentally invented the chocolate chip cookie in 1938.
Understanding the paragraph's specific focus is necessary to evaluate if the new sentence adds relevant information or creates a distraction.
2
Analyze the proposed sentence for relevance to that focus.
The proposed sentence provides historical details about the Toll House Inn being built in 1709 for travelers. This information does not contribute to the narrative of how the cookie was formulated or prepared.
Evaluating the proposed sentence determines whether it aligns with the paragraph's development or shifts the focus.
3
Determine the correct decision and logical justification.
The sentence should not be added because it is irrelevant and interrupts the chronological flow of the invention. This matches the option stating that the addition should not be made because it interrupts the sequence of events with irrelevant details.
Comparing the logical conclusion against the choices identifies the correct answer.

Key Concept

Evaluating Relevance for Adding or Deleting Content
Question 350Question

A writer is editing a passage about the invention of the windshield wiper and has drafted the following paragraph:

During a freezing trolley ride in New York City in 1902, Mary Anderson observed that the motorman had to keep the front window panes open to wipe away the accumulating sleet. Upon returning home to Alabama, Anderson sketched a design for a hand-operated blade that could clear a windshield from inside the vehicle. [1] In 1903, she was awarded a patent for her window-cleaning device, though many people initially doubted its safety, fearing it would distract drivers. Today, automatic wipers are a standard feature in virtually every automobile.

The writer is considering adding the following sentence at Point [1]:

Alabama is known for its humid subtropical climate and mild winters.

Should the writer make this addition?

Show answer & explanation

Answer: No, because it shifts the paragraph's focus from the development of Anderson's invention to irrelevant geographical details.

Answer

No, because it shifts the paragraph's focus from the development of Anderson's invention to irrelevant geographical details.
The paragraph focuses on the development, patenting, and ultimate standard adoption of Mary Anderson's invention of the windshield wiper. The proposed sentence discusses the climate of Alabama, which is completely irrelevant to the invention's history. Therefore, the sentence should not be added because it introduces an off-topic shift in focus to geographical details.

Step-by-Step Solution

1
Analyze the main focus of the paragraph.
The paragraph describes how Mary Anderson conceived the windshield wiper during a trip to New York, designed it in Alabama, and patented it, transitioning to its modern status.
Understanding the paragraph's theme is necessary to evaluate the relevance of any proposed addition.
2
Evaluate the relevance of the proposed sentence.
The proposed sentence discusses Alabama's climate (humid subtropical, mild winters), which is unrelated to the process of inventing or patenting the windshield wiper.
Adding off-topic sentences disrupts the flow and unity of the paragraph.
3
Determine the correct decision and justification.
The sentence should not be added (No) because it introduces an irrelevant shift in focus to geographical details.
The correct option must state both the correct decision ('No') and the rhetorically sound reason.

Key Concept

Evaluating Relevance for Adding or Deleting Content
Question 351Question

A writer is editing a passage about the decipherment of the Rosetta Stone.

[1] In 1822, French scholar Jean-François Champollion made a breakthrough in deciphering the Rosetta Stone, an ancient slab of black granodiorite. [2] The stone, discovered in 1799, featured a single decree written in three scripts: hieroglyphic, Demotic, and Ancient Greek. [3] By comparing the Greek text, which scholars could already read, with the mysterious Egyptian hieroglyphs, Champollion began to map out the phonetic sounds of the ancient characters. [4] He worked diligently in a small Paris study, often ignoring his failing health to translate long passages late into the night. [5] Eventually, this comparative analysis allowed him to reconstruct the alphabet used by the scribes, unlocking centuries of Egyptian history.

The writer is considering adding the following sentence to the paragraph (placed after Sentence 3):

Ancient Greek was widely spoken and used for administrative purposes throughout the eastern Mediterranean during the Hellenistic period.

Should the writer make this addition?

Show answer & explanation

Answer: No, because it interrupts the paragraph's focus on Champollion's decipherment process with irrelevant historical background about the Greek language.

Answer

The correct answer states that the sentence should not be added because it interrupts the paragraph's focus on Champollion's decipherment process with irrelevant historical background about the Greek language.
The correct option correctly identifies that the proposed sentence should not be added. The paragraph centers on Jean-François Champollion's scientific process of using comparative analysis to decipher ancient Egyptian hieroglyphs. Introducing details about the administrative use of Ancient Greek in the Hellenistic period shifts the focus away from Champollion's bilingual methodology and personal diligence.

Step-by-Step Solution

1
Analyze the main focus of the paragraph.
The paragraph focuses on Jean-François Champollion's methodology and process for deciphering the Rosetta Stone using comparative analysis.
To evaluate relevance, we must first establish the central theme of the existing text.
2
Evaluate the function of the proposed sentence.
The proposed sentence provides historical details about the widespread administrative use of Ancient Greek during the Hellenistic period.
This helps determine whether the new sentence supports the main focus or introduces a digression.
3
Compare the proposed sentence to the paragraph's theme and choose the correct decision.
The proposed sentence is irrelevant to Champollion's translation efforts and should not be added because it shifts the focus to Hellenistic history.
Since the sentence is irrelevant, the correct decision is 'No' because the sentence interrupts the flow of the passage with unnecessary background details.

Key Concept

Evaluating Relevance for Adding or Deleting Content
Estimated Time:1m 0s
Question 352Question

A writer is editing a passage about the development of the Braille writing system. Read the following paragraph:

Louis Braille was only fifteen years old in 1824 when he developed his tactile writing system for the visually impaired. Inspired by a military code of "night writing" created by Charles Barbier, Braille reduced Barbier's complex twelve-dot grid to a more manageable six-dot cell. [1] This modification allowed readers to recognize an entire character with a single touch of a fingertip, dramatically increasing reading speed. Braille's system eventually became the global standard, opening up new educational and professional opportunities for millions.

The writer is considering adding the following sentence at point [1]:
"Barbier was a captain in the French Army who also designed several other code systems for military use."

Should the writer make this addition?

Show answer & explanation

Answer: No, because it interrupts the paragraph's description of Braille's system by introducing unrelated details about Barbier's career.

Answer

No, because it interrupts the paragraph's description of Braille's system by introducing unrelated details about Barbier's career.
The correct decision is to exclude the sentence because the paragraph describes how Louis Braille adapted a code system to create an efficient reading method for the visually impaired. Detailing Charles Barbier's military career and other military codes interrupts this flow and introduces a tangent.

Step-by-Step Solution

1
Analyze the paragraph to identify its main focus.
The paragraph focuses on how Louis Braille improved a military code created by Charles Barbier to develop an efficient tactile writing system for the visually impaired.
Understanding the paragraph's primary focus is essential for determining whether new information is relevant or distracting.
2
Evaluate the proposed sentence for relevance to this main focus.
The proposed sentence discusses Barbier's military career, which does not contribute to the explanation of Braille's design modifications.
This step determines whether the sentence supports the topic or introduces a tangent.
3
Select the option that correctly identifies the decision to exclude the sentence and provides the proper rhetorical justification.
The correct decision is not to add the sentence because it deviates from the core topic of the paragraph.
The sentence should not be added because it introduces irrelevant biographical information about Barbier, which matches the option stating it interrupts the paragraph's description of Braille's system.

Key Concept

Evaluating Relevance for Adding or Deleting Content
Question 353Question

A writer is editing an essay about historical agricultural science and has drafted the following paragraph:

Russian botanist Nikolay Vavilov dedicated his life to ending famine by gathering seeds from crop wild relatives across five continents. By the 1930s, he had established the world’s largest seed collection in Leningrad. During the devastating 872-day Siege of Leningrad in World War II, Vavilov's assistants chose to starve to death rather than eat the unique samples of rice, wheat, and potatoes they protected. Svalbard, a remote Norwegian archipelago, now houses a global seed vault designed to withstand natural and man-made disasters. Ultimately, the scientists' sacrifice ensured the preservation of vital genetic plant diversity that helped restore agriculture after the war.

The writer is considering deleting the underlined sentence. Should the sentence be kept or deleted?

Show answer & explanation

Answer: Delete it, because it interrupts the paragraph's focus on Vavilov's Leningrad collection and the wartime sacrifice of his scientists.

Answer

Delete it, because it interrupts the paragraph's focus on Vavilov's Leningrad collection and the wartime sacrifice of his scientists.
The correct option correctly determines that the sentence should be deleted because it is irrelevant to the specific narrative. The paragraph deals with Vavilov's historical work and the sacrifices made by his team in Leningrad during World War II. Introducing details about a modern facility in Svalbard, Norway, disrupts the chronological flow and introduces a tangential topic.

Step-by-Step Solution

1
Analyze the paragraph to determine its main focus.
The paragraph focuses on Nikolay Vavilov establishing a massive seed collection in Leningrad, his assistants sacrificing their lives to protect it during the Siege of Leningrad in World War II, and the post-war agricultural impact of that sacrifice.
Understanding the paragraph's main theme is necessary to evaluate the relevance of any single sentence.
2
Evaluate the underlined sentence against the main focus.
The underlined sentence discusses Svalbard, a modern global seed vault in Norway designed to survive disasters. This is a modern development that is tangential to the historical narrative of the Leningrad Siege.
Identifying if a sentence adds value or introduces a distraction helps decide whether to keep or delete it.
3
Select the option that correctly identifies the decision to delete the sentence and provides the proper rhetorical justification.
The option to delete the sentence because it interrupts the historical focus on Vavilov's Leningrad collection and his scientists' sacrifice is the correct choice.
Only one option contains both the correct decision (delete) and the correct reasoning (focus interruption).

Key Concept

Evaluating Relevance for Adding or Deleting Content
Estimated Time:1m 0s
Question 354Question

Safeguarding the Future: The Svalbard Global Seed Vault

[1]
Deep inside a sandstone mountain on the Norwegian island of Spitsbergen, halfway between mainland Norway and the North Pole, lies the Svalbard Global Seed Vault. Often referred to as the "Doomsday Vault," this facility is designed to withstand both natural and man-made disasters. It serves as a safety net for the world's agricultural heritage, protecting millions of seed samples from around the globe against accidental loss in traditional genebanks.

[2]
The vault's location was chosen with meticulous care. Svalbard is geologically stable, reducing the risk of earthquakes. Furthermore, its extreme northern latitude offers natural permafrost, which helps keep the seeds frozen even if the facility's mechanical cooling systems fail. The seeds are stored at a constant temperature of minus eighteen degrees Celsius. Wrapped in moisture-resistant foil packages and placed in sealed boxes, the seeds are shielded from moisture and oxygen, ensuring their viability for decades or even centuries.

[3]
While local genebanks exist in almost every country, they are vulnerable to war, political instability, and natural disasters. For example, during the Syrian Civil War, researchers at the International Center for Agricultural Research in the Dry Areas (ICARDA) in Aleppo were forced to abandon their facility. Fortunately, because they had previously deposited duplicates of their seed collection in the Svalbard vault, they were able to retrieve the seeds and re-establish their operations in Lebanon and Morocco. This real-world test demonstrated the indispensable role of the vault in global food security.

Suppose the writer's goal had been to write an essay that describes the construction challenges and architectural engineering details of building the Svalbard Global Seed Vault. Would this essay successfully accomplish this goal?

Show answer & explanation

Answer: No, because the essay focuses on the purpose, environmental suitability of the location, and real-world utility of the vault rather than the specific construction methods and engineering plans used to build it.

Answer

No, because the essay focuses on the purpose, environmental suitability of the location, and real-world utility of the vault rather than the specific construction methods and engineering plans used to build it.
The correct answer is the option stating that the essay would not accomplish the goal because it focuses on the purpose, environmental suitability of the location, and real-world utility of the vault rather than specific construction methods and engineering plans. The passage provides a general overview of why the vault exists and where it is located, but it does not detail the technical blueprints, machinery used, or architectural engineering challenges involved in its physical creation.

Step-by-Step Solution

1
Analyze the proposed writing goal.
The goal is to describe the construction challenges and architectural engineering details of building the Svalbard Global Seed Vault.
Understanding the target goal allows for comparison with the actual content of the passage.
2
Evaluate the passage content against the proposed goal.
The passage discusses the vault's geographic location, its preservation mechanism (permafrost, foil packaging), and its real-world utility (ICARDA case study). It does not discuss blueprints, excavation techniques, construction materials, structural engineering, or specific construction challenges.
Determining what the passage actually covers helps identify whether it meets the proposed goal.
3
Select the correct option that matches the evaluation.
The correct option must state that the goal was not met ('No') and provide the reason that the essay focuses on the purpose and utility rather than the construction and engineering details.
This aligns the logical analysis of the passage with the correct answer choice.

Key Concept

Evaluating whole-essay goals requires analyzing the primary focus and scope of the entire passage to determine if it aligns with a newly proposed writing purpose.
Estimated Time:1m 30s
Question 355Question

During World War II, Bletchley Park served as the central site for British codebreaking, where cryptanalysts worked tirelessly to decipher enemy communications. The intelligence produced here, codenamed Ultra, provided crucial support to the Allied war effort by revealing enemy troop movements. The codebreakers achieved success not through a single breakthrough, but through a combination of mathematical theory, technological innovation, and sheer persistence. To assist in this massive effort, the British government recruited individuals from a wide variety of intellectual backgrounds.

Given that all the choices are true, which one provides the most specific, concrete details to support the claim that the recruited individuals came from diverse intellectual backgrounds?

Show answer & explanation

Answer: These recruits included not only mathematicians and cryptographers but also chess champions, linguists, and classicists.

Answer

The correct answer is the option that lists specific professions such as mathematicians, cryptographers, chess champions, linguists, and classicists, as it provides concrete examples that support the claim of diverse intellectual backgrounds.
The option that lists specific professions and fields of study provides concrete examples of the recruits' diverse intellectual backgrounds. This directly supports the sentence's claim with precise details rather than vague generalizations.

Step-by-Step Solution

1
Identify the main claim to be supported.
The claim in the passage is that the British government recruited individuals from a 'wide variety of intellectual backgrounds.'
Knowing the specific claim helps determine which details are relevant and supportive.
2
Evaluate each option for grammatical correctness and relevance to the claim.
One option is a grammatically incorrect dependent clause fragment. Another option is irrelevant to the recruits' backgrounds, focusing instead on location. Another option is too vague.
This filters out grammatically incorrect options and those that do not address the rhetorical goal.
3
Select the option that offers the most specific, concrete details demonstrating diverse intellectual fields.
The option listing mathematicians, cryptographers, chess champions, linguists, and classicists is grammatically correct and provides specific, diverse examples.
Concrete details are more effective at supporting a claim than vague generalizations.

Key Concept

Supporting Claims with Evidence and Details
Question 356Question

Smeaton's Tower and the Rebirth of Concrete

[1] In 1756, the Eddystone Rocks, a treacherous reef off the coast of Devon, England, presented a notorious danger to maritime navigation. Two successive wooden lighthouses built on the site had already been destroyed—one swept away by a ferocious storm, and the other consumed by fire. Recognizing that wood was insufficient to withstand the relentless force of the Atlantic, the English engineer John Smeaton resolved to build a structure entirely of stone.

[2] Smeaton’s design was revolutionary. He modeled the lighthouse's shape on the trunk of an oak tree, tapering upward to distribute the impact of waves. Rather than relying on simple gravity to hold the granite blocks in place, Smeaton pioneered a system of interlocking dovetail joints, effectively binding the stones into a single, cohesive monolith. Yet, his most enduring contribution was not the shape of the tower, but the mortar that held it together.

[3] At the time, standard mortar dissolved in water. To find a mixture that would cure under water, Smeaton embarked on a series of rigorous experiments with different compositions of lime and clay. He discovered that lime containing a high proportion of clay produced a cement that was hydraulic—meaning it would set and harden even when completely submerged. This breakthrough revived a technology lost since the fall of the Roman Empire: hydraulic concrete. Smeaton's Eddystone Lighthouse stood for over a century, proving the viability of hydraulic mortar and paving the way for modern civil engineering.

Suppose the writer's goal had been to write an essay that chronicles the history of lighthouse construction in England from the seventeenth century to the modern era. Would this essay fulfill that goal?

Show answer & explanation

Answer: No, because the essay focuses almost exclusively on Smeaton’s specific engineering breakthroughs for one lighthouse rather than tracking the nationwide evolution of lighthouses over centuries.

Answer

No, because the essay focuses almost exclusively on Smeaton’s specific engineering breakthroughs for one lighthouse rather than tracking the nationwide evolution of lighthouses over centuries.
The correct option correctly identifies that the essay does not fulfill the writer's goal because the text is a focused case study on John Smeaton's mid-eighteenth-century engineering breakthroughs at the Eddystone Rocks. It does not provide the broad, multi-century history of English lighthouse construction required by the hypothetical goal.

Step-by-Step Solution

1
Identify the hypothetical writing goal.
The goal is to chronicle the history of lighthouse construction in England from the seventeenth century to the modern era.
To establish the benchmark against which the essay's content will be evaluated.
2
Analyze the actual scope of the essay.
The essay focuses on John Smeaton's mid-eighteenth-century design and mortar innovations for the Eddystone Lighthouse.
To determine the primary focus and boundaries of the text.
3
Compare the essay's actual content to the hypothetical goal.
The essay does not fulfill the goal because it is a narrow case study of a single project, not a broad, multi-century chronicle.
To decide whether the correct direction is Yes or No.
4
Evaluate the explanations associated with the No options.
The option stating that the essay focuses on Smeaton's specific engineering breakthroughs for one lighthouse is accurate and logically supports the No conclusion, while the other No option incorrectly claims Smeaton's design was a failure.
To select the correct option among the choices.

Key Concept

Evaluating Whole-Essay Goals and Purpose
Question 357Question

A writer is editing a passage about Mesoamerican history and has drafted the following paragraph:

Tatiana Proskouriakoff, an architect by training, revolutionized Mesoamerican archaeology in the mid-twentieth century through her meticulous drawings of ancient monuments. Working at the Carnegie Institution of Washington, she analyzed the dates inscribed on stelae—carved stone slabs—at the ruins of Piedras Negras. Rather than viewing the carvings as abstract astrological charts or depictions of mythical gods, Proskouriakoff proposed a groundbreaking theory: the monuments recorded the actual historical biographies of Mayan rulers. She noticed that the lifespan patterns of the recorded dates matched the average lifespans of human beings. Consequently, she hypothesized that the glyphs documented births, accessions to the throne, and deaths of real monarchs.

The writer is considering adding the following sentence to the end of the paragraph:

'Hieroglyphs were also carved into smaller jade ornaments and pottery found in Mayan tombs.'

Should the writer make this addition?

Show answer & explanation

Answer: No, because it departs from the paragraph's focus on Proskouriakoff's breakthrough regarding the historical meaning of stelae inscriptions.

Answer

No, because it departs from the paragraph's focus on Proskouriakoff's breakthrough regarding the historical meaning of stelae inscriptions.
The correct answer correctly determines that the sentence should not be added because the paragraph's central focus is on Proskouriakoff's specific breakthrough in interpreting Mayan stelae as biographical records. The proposed sentence introduces irrelevant details about other mediums containing hieroglyphs, which diverges from this focus.

Step-by-Step Solution

1
Identify the primary focus of the paragraph.
The paragraph focuses on Tatiana Proskouriakoff's breakthrough theory that Mayan stelae recorded the actual historical biographies of Mayan rulers, rather than abstract astrological or mythological data.
Understanding the paragraph's main theme is essential for evaluating whether new information is relevant.
2
Analyze the proposed sentence to see if it aligns with this focus.
The proposed sentence discusses Mayan hieroglyphs carved on jade ornaments and pottery in tombs, which is a different topic from stelae and Proskouriakoff's specific historical biography discovery.
This determines whether the proposed sentence is relevant or is a tangential distraction.
3
Evaluate the decision and justifications in the options.
Since the sentence is irrelevant, it should not be added. The correct reason is that it departs from the paragraph's focus on Proskouriakoff's breakthrough regarding stelae inscriptions.
This allows us to select the option that has both the correct decision (No) and the correct logical explanation.

Key Concept

Evaluating Relevance for Adding or Deleting Content
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Topic Development Practice Questions — ACT — Page 18 | Examkin